抄録
Stress corrosion cracking tests of commercial structural steel plates (JIS-S53C, 50L×5W×1Tmm) tempered at various temperatures and for different times in the molten salt bath were carried out in the boiling 20w/v% NH4NO3 solution. A C-type stress corrosion cracking test apparatus having a final set span of 40mm was employed. On the basis of the results obtained, the influence of the tempering temperature and time on the incubation time, propagation behavior and failure time in stress corrosion cracking were discussed.
